Horn for shoe-sewing machines



(No Model.)

J. N. MOULTON.

HORN FOR SHOE SEWING MACHINES.

WWW

y Patented Nov. 13, 1888.

N. PEIERS. Plum: Lllhagmp NITED STATES ATENT tries.

JAMES N. MOULTON, OF HAVERHILL, MASSACHUSETTS.

HORN FOR' SHOE SEWING MACl-HNES.

SPECIFICATION'fonning part of Letters Patent No. 392,629, dated November 13, 1888. Application filed March 16, 1888. Serial No. 267,339. (No model.)

To ctZZ whom it may concern:

Be it known that 1, JAMES N. MoULToN, of Haverhill, county of Essex, State of Massachusetts, have invented an Improvement in Sewing-Machines, of which the following description, in connection with the accompanying drawings, is a specification, like letters on the drawings representing like parts.

This invention has for its object to improve the construction of that class of sewing-machines employed in sewing uppers to soles of boots and shoes.

My invention consists, more essentially, in the combination, with a presser-foot, of a raised throat made a little higher at a point back of the needle-hole than in front of the needlehole, whereby the pressure is chiefly upon the material after it has been sewed rather than before, thus obviating unduly straining or stretching the upper just as it is to be stitched to the sole.

Another feature of my invention is the combination, with a raised throat having a convexed top, of a presser-foot having a holding keel or fin to enter the material of the sole near to and parallel with the line of stitching uniting the sole and upper, the said keel preventing the sole from slipping laterally out from between the throat and foot, the latter also acting as a guide against the edge of which the sole runs and is directed by the operator as the feedingawl is actuated to feed the sole.

Figure 1, in front elevation, represents a sufficient portion of a sewing-machine to enable my improvement to be understood; Fig. 2, a right-hand side elevation of Fig. 1, apiece of a sole, an upper, and a welt being introduced between the foot and raised throat; and Fig. 3 shows the throat in top or plan View.

The head A is supposed to be that at the front end of an overhanging arm of usual construction; and B is a casing or bed within which is located and actuated an under-thread carrier, preferably a shuttle, (not shown,) but of usual construction, it not being herein shown because not of my invention. The said parts, as well as the needle-bar G, needle 0,

presser-bar D, awl-bar D,'and awl D for feeding the material, are all as in common use, so need not be herein described.

The sole Z) (shown partially in Fig. 2) is channeled, as shown, and its edge is turned up to form a flange, b, leaving a lip, b and into the said space is entered the upper 6 and on the upper opposite the flange is placed one edge of the welt b; The presser-foot a, havinga needle-hole, as a has at its under side a keel, a, extended in the direction of the feed of the material, the said keel being sharp enough to enter the material of the flange b of the sole and prevent lateral movement of the flange out from between the foot and the raised throat d, forming part of a plate, at, attached by a screw, d to the base part B. This keel enters the material of the flange parallel with the line of stitching uniting the upper and sole, as when a turned shoe is being sewed,or upper, sole, and welt,as when. a welted shoe is being sewed. The edge a of the presser-foot constitutes a guide against which the operator pushes the sole, as shown in Fig. 2, the presser-foot acting as a guide when the awl acts to feed the shoe over the raised throat (Z. The raised throat d at the rear side of the needle-hole, as at 2, (see Fig. 1,) is elevated sufficiently above that part 3 of the throatplate in advance of the needle-hole in the line of the feed to enable the chief weight or pressure of the. presser-i'oot on the material be tween it and the raised throat to be applied so above the point 2 where the upper and sole are stitched together. When the pressure is alike and both in front and back of the needlehole 4 in the raised throat d, it happens, in consequence of the excessive pressure of the foot on the stock in advance of the needle passage in the said throat, that the material of the upper, especially in turned work, if light and thin, and also the welt, is unduly stretched out of shape on its way to the needle; so the raising of the throat at the point 2 is a matter of very considerable practical advantage. The front part of the raised throat is shown as bridged, as atf, to prevent the upper from being struck by the descending needle, and the rear portion of the throat is beveled or cut away backwardly at 5 to afford space for the 7 ready manipulation of the shoe.

I do not broadly claim a raised throat.

I am aware that a presser-foot has been used in connection with an indicator in front of the ICC needle and a work-supporting post at the rear of the needle, the indicator being higher than the post,and such construction I do not claim.

I clain1- 1. The raised throat provided with the ele- Vated portion 2 at the rear side of the needlehole, and reduced in height at the front of the needle-hole, combined with the presser-foot, whereby the material is subjected to greater pressure at the rear of the needle-hole, to operate substantially as described.

2. The raised throat d, elevated at the rear side of the needlehole and reduced in front oi the same, combined with the presser-foothaving a keel to enter the flanged part of the sole 15 parallel with the line of stitching uniting the sole and upper, to operate substantially as described.

In testimony whereof I have signed my name to thisspecification in the presence of two sub- 20 scribing Witnesses.

BERNIOE J. NoYEs, B. DEWAR. 

